Issue shell commands or connect to pi terminal

Note Down the IP address from welcome screen. From the local network of the Pi, use "putty" in Windows or ssh in Linux/Mac machines to connect. The default username and password is "pi" and "pi" which can be changed under pisignage.com/settings screen. e.g. ssh pi@192.168.0.163

Connect a USB keyboard and press ctrl+alt+t to open the terminal. If a video is playing in front, type blindly pkill node;sudo pkill omx;